A tapered ice guide member that expands downward is attached to the ice holder.

When the ice holder is lowered by driving the lifting mechanism, the ice guide member guides the ice toward its axis center, and the center of gravity of the ice can be automatically aligned with the axis of the rotary shaft.

The filament closure includes a portion of frozen fluid, such as water that provides an ice bearing (62) including an orifice to allow movement of the length of the filament through the filament closure.

The invention further comprises means (13) for fixing the gongs and the lugs thereof to the glass support (21) such that the gongs and the lugs are connected to the glass (22).